New Lessons starting June 21st

Week 1
Which tone was that again? (ele)
Week 2
World Cup and Diamonds (ele)
Week 3
Security Check in the Subway (ele)
Week 4
A New Jug for the Water Cooler (ele)
I plan to master each lesson and do all exercises and test. Is this ok if we do one lesson per week. I think this will work best with my schedule.